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/cvs/IO-AIO/AIO.xs

Comparing IO-AIO/AIO.xs (file contents):
Revision 1.77 by root, Thu Oct 26 13:25:40 2006 UTC vs.
Revision 1.103 by root, Sun Jul 8 09:09:34 2007 UTC

1	/* solaris */	1	#include "xthread.h"
2	#define _POSIX_PTHREAD_SEMANTICS 1
3
4	#if __linux && !defined(_GNU_SOURCE)
5	# define _GNU_SOURCE
6	#endif
7
8	/* just in case */
9	#define _REENTRANT 1
10		2
11	#include <errno.h>	3	#include <errno.h>
12		4
13	#include "EXTERN.h"	5	#include "EXTERN.h"
14	#include "perl.h"	6	#include "perl.h"
15	#include "XSUB.h"	7	#include "XSUB.h"
16		8
17	#include "autoconf/config.h"
18
19	#include <pthread.h>
20
21	#include <stddef.h>	9	#include <stddef.h>
		10	#include <stdlib.h>
22	#include <errno.h>	11	#include <errno.h>
23	#include <sys/time.h>
24	#include <sys/select.h>
25	#include <sys/types.h>	12	#include <sys/types.h>
26	#include <sys/stat.h>	13	#include <sys/stat.h>
27	#include <limits.h>	14	#include <limits.h>
28	#include <unistd.h>
29	#include <fcntl.h>	15	#include <fcntl.h>
30	#include <signal.h>
31	#include <sched.h>	16	#include <sched.h>
		17
		18	#ifdef _WIN32
		19
		20	# define SIGIO 0
		21	typedef Direntry_t X_DIRENT;
		22	#undef malloc
		23	#undef free
		24
		25	// perl overrides all those nice win32 functions
		26	# undef open
		27	# undef read
		28	# undef write
		29	# undef stat
		30	# undef fstat
		31	# define lstat stat
		32	# undef truncate
		33	# undef ftruncate
		34	# undef open
		35	# undef close
		36	# undef unlink
		37	# undef rmdir
		38	# undef rename
		39	# undef lseek
		40
		41	# define chown(a,b,c) (errno = ENOSYS, -1)
		42	# define fchown(a,b,c) (errno = ENOSYS, -1)
		43	# define fchmod(a,b) (errno = ENOSYS, -1)
		44	# define symlink(a,b) (errno = ENOSYS, -1)
		45	# define readlink(a,b,c) (errno = ENOSYS, -1)
		46	# define mknod(a,b,c) (errno = ENOSYS, -1)
		47	# define truncate(a,b) (errno = ENOSYS, -1)
		48	# define ftruncate(fd,o) chsize ((fd), (o))
		49	# define fsync(fd) _commit (fd)
		50	# define opendir(fd) (errno = ENOSYS, 0)
		51	# define readdir(fd) (errno = ENOSYS, -1)
		52	# define closedir(fd) (errno = ENOSYS, -1)
		53	# define mkdir(a,b) mkdir (a)
		54
		55	#else
		56
		57	# include "autoconf/config.h"
		58	# include <sys/time.h>
		59	# include <sys/select.h>
		60	# include <unistd.h>
		61	# include <utime.h>
		62	# include <signal.h>
		63	typedef struct dirent X_DIRENT;
		64
		65	#endif
32		66
33	#if HAVE_SENDFILE	67	#if HAVE_SENDFILE
34	# if __linux	68	# if __linux
35	# include <sys/sendfile.h>	69	# include <sys/sendfile.h>
36	# elif __freebsd	70	# elif __freebsd
…		…
43	# else	77	# else
44	# error sendfile support requested but not available	78	# error sendfile support requested but not available
45	# endif	79	# endif
46	#endif	80	#endif
47		81
		82	/* number of seconds after which idle threads exit */
		83	#define IDLE_TIMEOUT 10
		84
48	/* used for struct dirent, AIX doesn't provide it */	85	/* used for struct dirent, AIX doesn't provide it */
49	#ifndef NAME_MAX	86	#ifndef NAME_MAX
50	# define NAME_MAX 4096	87	# define NAME_MAX 4096
51	#endif	88	#endif
52		89
53	#ifndef PTHREAD_STACK_MIN
54	/* care for broken platforms, e.g. windows */
55	# define PTHREAD_STACK_MIN 16384
56	#endif
57
58	#if __ia64
59	# define STACKSIZE 65536
60	#elif __i386 || __x86_64 /* 16k is unreasonably high :( */
61	# define STACKSIZE PTHREAD_STACK_MIN
62	#else
63	# define STACKSIZE 16384
64	#endif
65
66	/* buffer size for various temporary buffers */	90	/* buffer size for various temporary buffers */
67	#define AIO_BUFSIZE 65536	91	#define AIO_BUFSIZE 65536
68		92
		93	/* use NV for 32 bit perls as it allows larger offsets */
		94	#if IVSIZE >= 8
		95	# define SvVAL64 SvIV
		96	#else
		97	# define SvVAL64 SvNV
		98	#endif
		99
69	#define dBUF \	100	#define dBUF \
70	char *aio_buf; \	101	char *aio_buf; \
71	LOCK (wrklock); \	102	X_LOCK (wrklock); \
72	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \	103	self->dbuf = aio_buf = malloc (AIO_BUFSIZE); \
73	UNLOCK (wrklock); \	104	X_UNLOCK (wrklock); \
74	if (!aio_buf) \	105	if (!aio_buf) \
75	return -1;	106	return -1;
		107
		108	typedef SV SV8; /* byte-sv, used for argument-checking */
76		109
77	enum {	110	enum {
78	REQ_QUIT,	111	REQ_QUIT,
79	REQ_OPEN, REQ_CLOSE,	112	REQ_OPEN, REQ_CLOSE,
80	REQ_READ, REQ_WRITE, REQ_READAHEAD,	113	REQ_READ, REQ_WRITE,
81	REQ_SENDFILE,	114	REQ_READAHEAD, REQ_SENDFILE,
82	REQ_STAT, REQ_LSTAT, REQ_FSTAT,	115	REQ_STAT, REQ_LSTAT, REQ_FSTAT,
		116	REQ_TRUNCATE, REQ_FTRUNCATE,
		117	REQ_UTIME, REQ_FUTIME,
		118	REQ_CHMOD, REQ_FCHMOD,
		119	REQ_CHOWN, REQ_FCHOWN,
83	REQ_FSYNC, REQ_FDATASYNC,	120	REQ_FSYNC, REQ_FDATASYNC,
84	REQ_UNLINK, REQ_RMDIR, REQ_RENAME,	121	REQ_UNLINK, REQ_RMDIR, REQ_MKDIR, REQ_RENAME,
85	REQ_READDIR,	122	REQ_MKNOD, REQ_READDIR,
86	REQ_LINK, REQ_SYMLINK,	123	REQ_LINK, REQ_SYMLINK, REQ_READLINK,
87	REQ_GROUP, REQ_NOP,	124	REQ_GROUP, REQ_NOP,
88	REQ_BUSY,	125	REQ_BUSY,
89	};	126	};
90		127
91	#define AIO_REQ_KLASS "IO::AIO::REQ"	128	#define AIO_REQ_KLASS "IO::AIO::REQ"
…		…
93		130
94	typedef struct aio_cb	131	typedef struct aio_cb
95	{	132	{
96	struct aio_cb *volatile next;	133	struct aio_cb *volatile next;
97		134
98	SV *data, *callback;	135	SV *callback;
99	SV *fh, *fh2;	136	SV *sv1, *sv2;
100	void *dataptr, *data2ptr;	137	void *ptr1, *ptr2;
101	Stat_t *statdata;
102	off_t offset;	138	off_t offs;
103	size_t length;	139	size_t size;
104	ssize_t result;	140	ssize_t result;
		141	double nv1, nv2;
105		142
106	STRLEN dataoffset;	143	STRLEN stroffset;
107	int type;	144	int type;
108	int fd, fd2;	145	int int1, int2, int3;
109	int errorno;	146	int errorno;
110	mode_t mode; /* open */	147	mode_t mode; /* open */
111		148
112	unsigned char flags;	149	unsigned char flags;
113	unsigned char pri;	150	unsigned char pri;
…		…
115	SV *self; /* the perl counterpart of this request, if any */	152	SV *self; /* the perl counterpart of this request, if any */
116	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;	153	struct aio_cb *grp, *grp_prev, *grp_next, *grp_first;
117	} aio_cb;	154	} aio_cb;
118		155
119	enum {	156	enum {
120	FLAG_CANCELLED = 0x01,	157	FLAG_CANCELLED = 0x01, /* request was cancelled */
		158	FLAG_SV2_RO_OFF = 0x40, /* data was set readonly */
		159	FLAG_PTR2_FREE = 0x80, /* need to free(ptr2) */
121	};	160	};
122		161
123	typedef aio_cb *aio_req;	162	typedef aio_cb *aio_req;
124	typedef aio_cb *aio_req_ornot;	163	typedef aio_cb *aio_req_ornot;
125		164
…		…
130	DEFAULT_PRI = 0,	169	DEFAULT_PRI = 0,
131	PRI_BIAS = -PRI_MIN,	170	PRI_BIAS = -PRI_MIN,
132	NUM_PRI = PRI_MAX + PRI_BIAS + 1,	171	NUM_PRI = PRI_MAX + PRI_BIAS + 1,
133	};	172	};
134		173
		174	#define AIO_TICKS ((1000000 + 1023) >> 10)
		175
		176	static unsigned int max_poll_time = 0;
		177	static unsigned int max_poll_reqs = 0;
		178
		179	/* calculcate time difference in ~1/AIO_TICKS of a second */
		180	static int tvdiff (struct timeval *tv1, struct timeval *tv2)
		181	{
		182	return (tv2->tv_sec - tv1->tv_sec ) * AIO_TICKS
		183	+ ((tv2->tv_usec - tv1->tv_usec) >> 10);
		184	}
		185
		186	static thread_t main_tid;
		187	static int main_sig;
		188	static int block_sig_level;
		189
		190	void block_sig ()
		191	{
		192	sigset_t ss;
		193
		194	if (block_sig_level++)
		195	return;
		196
		197	if (!main_sig)
		198	return;
		199
		200	sigemptyset (&ss);
		201	sigaddset (&ss, main_sig);
		202	pthread_sigmask (SIG_BLOCK, &ss, 0);
		203	}
		204
		205	void unblock_sig ()
		206	{
		207	sigset_t ss;
		208
		209	if (--block_sig_level)
		210	return;
		211
		212	if (!main_sig)
		213	return;
		214
		215	sigemptyset (&ss);
		216	sigaddset (&ss, main_sig);
		217	pthread_sigmask (SIG_UNBLOCK, &ss, 0);
		218	}
		219
135	static int next_pri = DEFAULT_PRI + PRI_BIAS;	220	static int next_pri = DEFAULT_PRI + PRI_BIAS;
136		221
137	static int started, wanted;	222	static unsigned int started, idle, wanted;
138	static volatile int nreqs;
139	static int respipe [2];
140
141	#if __linux && defined (PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP)
142	# define AIO_MUTEX_INIT PTHREAD_ADAPTIVE_MUTEX_INITIALIZER_NP
143	#else
144	# define AIO_MUTEX_INIT PTHREAD_MUTEX_INITIALIZER
145	#endif
146
147	#define LOCK(mutex) pthread_mutex_lock (&(mutex))
148	#define UNLOCK(mutex) pthread_mutex_unlock (&(mutex))
149		223
150	/* worker threads management */	224	/* worker threads management */
151	static pthread_mutex_t wrklock = AIO_MUTEX_INIT;	225	static mutex_t wrklock = X_MUTEX_INIT;
152		226
153	typedef struct worker {	227	typedef struct worker {
154	/* locked by wrklock */	228	/* locked by wrklock */
155	struct worker *prev, *next;	229	struct worker *prev, *next;
156		230
157	pthread_t tid;	231	thread_t tid;
158		232
159	/* locked by reslock, reqlock or wrklock */	233	/* locked by reslock, reqlock or wrklock */
160	aio_req req; /* currently processed request */	234	aio_req req; /* currently processed request */
161	void *dbuf;	235	void *dbuf;
162	DIR *dirp;	236	DIR *dirp;
…		…
185	wrk->prev->next = wrk->next;	259	wrk->prev->next = wrk->next;
186		260
187	free (wrk);	261	free (wrk);
188	}	262	}
189		263
		264	static volatile unsigned int nreqs, nready, npending;
		265	static volatile unsigned int max_idle = 4;
		266	static volatile unsigned int max_outstanding = 0xffffffff;
		267	static int respipe [2];
		268
190	static pthread_mutex_t reslock = AIO_MUTEX_INIT;	269	static mutex_t reslock = X_MUTEX_INIT;
191	static pthread_mutex_t reqlock = AIO_MUTEX_INIT;	270	static mutex_t reqlock = X_MUTEX_INIT;
192	static pthread_cond_t reqwait = PTHREAD_COND_INITIALIZER;	271	static cond_t reqwait = X_COND_INIT;
		272
		273	#if WORDACCESS_UNSAFE
		274
		275	static unsigned int get_nready ()
		276	{
		277	unsigned int retval;
		278
		279	X_LOCK (reqlock);
		280	retval = nready;
		281	X_UNLOCK (reqlock);
		282
		283	return retval;
		284	}
		285
		286	static unsigned int get_npending ()
		287	{
		288	unsigned int retval;
		289
		290	X_LOCK (reslock);
		291	retval = npending;
		292	X_UNLOCK (reslock);
		293
		294	return retval;
		295	}
		296
		297	static unsigned int get_nthreads ()
		298	{
		299	unsigned int retval;
		300
		301	X_LOCK (wrklock);
		302	retval = started;
		303	X_UNLOCK (wrklock);
		304
		305	return retval;
		306	}
		307
		308	#else
		309
		310	# define get_nready() nready
		311	# define get_npending() npending
		312	# define get_nthreads() started
		313
		314	#endif
193		315
194	/*	316	/*
195	* a somewhat faster data structure might be nice, but	317	* a somewhat faster data structure might be nice, but
196	* with 8 priorities this actually needs <20 insns	318	* with 8 priorities this actually needs <20 insns
197	* per shift, the most expensive operation.	319	* per shift, the most expensive operation.
…		…
243	}	365	}
244		366
245	abort ();	367	abort ();
246	}	368	}
247		369
248	static int poll_cb (int max);	370	static int poll_cb ();
249	static void req_invoke (aio_req req);	371	static int req_invoke (aio_req req);
250	static void req_free (aio_req req);	372	static void req_destroy (aio_req req);
251	static void req_cancel (aio_req req);	373	static void req_cancel (aio_req req);
252		374
253	/* must be called at most once */	375	/* must be called at most once */
254	static SV *req_sv (aio_req req, const char *klass)	376	static SV *req_sv (aio_req req, const char *klass)
255	{	377	{
…		…
274	return mg ? (aio_req)mg->mg_ptr : 0;	396	return mg ? (aio_req)mg->mg_ptr : 0;
275	}	397	}
276		398
277	static void aio_grp_feed (aio_req grp)	399	static void aio_grp_feed (aio_req grp)
278	{	400	{
		401	block_sig ();
		402
279	while (grp->length < grp->fd2 && !(grp->flags & FLAG_CANCELLED))	403	while (grp->size < grp->int2 && !(grp->flags & FLAG_CANCELLED))
280	{	404	{
281	int old_len = grp->length;	405	int old_len = grp->size;
282		406
283	if (grp->fh2 && SvOK (grp->fh2))	407	if (grp->sv2 && SvOK (grp->sv2))
284	{	408	{
285	dSP;	409	dSP;
286		410
287	ENTER;	411	ENTER;
288	SAVETMPS;	412	SAVETMPS;
289	PUSHMARK (SP);	413	PUSHMARK (SP);
290	XPUSHs (req_sv (grp, AIO_GRP_KLASS));	414	XPUSHs (req_sv (grp, AIO_GRP_KLASS));
291	PUTBACK;	415	PUTBACK;
292	call_sv (grp->fh2, G_VOID | G_EVAL | G_KEEPERR);	416	call_sv (grp->sv2, G_VOID | G_EVAL | G_KEEPERR);
293	SPAGAIN;	417	SPAGAIN;
294	FREETMPS;	418	FREETMPS;
295	LEAVE;	419	LEAVE;
296	}	420	}
297		421
298	/* stop if no progress has been made */	422	/* stop if no progress has been made */
299	if (old_len == grp->length)	423	if (old_len == grp->size)
300	{	424	{
301	SvREFCNT_dec (grp->fh2);	425	SvREFCNT_dec (grp->sv2);
302	grp->fh2 = 0;	426	grp->sv2 = 0;
303	break;	427	break;
304	}	428	}
305	}	429	}
		430
		431	unblock_sig ();
306	}	432	}
307		433
308	static void aio_grp_dec (aio_req grp)	434	static void aio_grp_dec (aio_req grp)
309	{	435	{
310	--grp->length;	436	--grp->size;
311		437
312	/* call feeder, if applicable */	438	/* call feeder, if applicable */
313	aio_grp_feed (grp);	439	aio_grp_feed (grp);
314		440
315	/* finish, if done */	441	/* finish, if done */
316	if (!grp->length && grp->fd)	442	if (!grp->size && grp->int1)
317	{	443	{
		444	block_sig ();
		445
318	req_invoke (grp);	446	if (!req_invoke (grp))
		447	{
		448	req_destroy (grp);
		449	unblock_sig ();
		450	croak (0);
		451	}
		452
319	req_free (grp);	453	req_destroy (grp);
		454	unblock_sig ();
320	}	455	}
321	}	456	}
322		457
323	static void poll_wait ()
324	{
325	fd_set rfd;
326
327	while (nreqs)
328	{
329	int size;
330	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
331	LOCK (reslock);
332	#endif
333	size = res_queue.size;
334	#if !(__i386 || __x86_64) /* safe without sempahore on these archs */
335	UNLOCK (reslock);
336	#endif
337
338	if (size)
339	return;
340
341	FD_ZERO(&rfd);
342	FD_SET(respipe [0], &rfd);
343
344	select (respipe [0] + 1, &rfd, 0, 0, 0);
345	}
346	}
347
348	static void req_invoke (aio_req req)	458	static int req_invoke (aio_req req)
349	{	459	{
350	dSP;	460	dSP;
		461
		462	if (req->flags & FLAG_SV2_RO_OFF)
		463	SvREADONLY_off (req->sv2);
351		464
352	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))	465	if (!(req->flags & FLAG_CANCELLED) && SvOK (req->callback))
353	{	466	{
354	errno = req->errorno;
355
356	ENTER;	467	ENTER;
357	SAVETMPS;	468	SAVETMPS;
358	PUSHMARK (SP);	469	PUSHMARK (SP);
359	EXTEND (SP, 1);	470	EXTEND (SP, 1);
360		471
…		…
365	SV *rv = &PL_sv_undef;	476	SV *rv = &PL_sv_undef;
366		477
367	if (req->result >= 0)	478	if (req->result >= 0)
368	{	479	{
369	int i;	480	int i;
370	char *buf = req->data2ptr;	481	char *buf = req->ptr2;
371	AV *av = newAV ();	482	AV *av = newAV ();
372		483
373	av_extend (av, req->result - 1);	484	av_extend (av, req->result - 1);
374		485
375	for (i = 0; i < req->result; ++i)	486	for (i = 0; i < req->result; ++i)
…		…
395	PUSHs (sv_2mortal (newSViv (req->result)));	506	PUSHs (sv_2mortal (newSViv (req->result)));
396	PUTBACK;	507	PUTBACK;
397	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);	508	call_pv ("IO::AIO::_fd2fh", G_SCALAR | G_EVAL);
398	SPAGAIN;	509	SPAGAIN;
399		510
400	fh = SvREFCNT_inc (POPs);	511	fh = POPs;
401
402	PUSHMARK (SP);	512	PUSHMARK (SP);
403	XPUSHs (sv_2mortal (fh));	513	XPUSHs (fh);
404	}	514	}
405	break;	515	break;
406		516
407	case REQ_GROUP:	517	case REQ_GROUP:
408	req->fd = 2; /* mark group as finished */	518	req->int1 = 2; /* mark group as finished */
409		519
410	if (req->data)	520	if (req->sv1)
411	{	521	{
412	int i;	522	int i;
413	AV *av = (AV *)req->data;	523	AV *av = (AV *)req->sv1;
414		524
415	EXTEND (SP, AvFILL (av) + 1);	525	EXTEND (SP, AvFILL (av) + 1);
416	for (i = 0; i <= AvFILL (av); ++i)	526	for (i = 0; i <= AvFILL (av); ++i)
417	PUSHs (*av_fetch (av, i, 0));	527	PUSHs (*av_fetch (av, i, 0));
418	}	528	}
…		…
420		530
421	case REQ_NOP:	531	case REQ_NOP:
422	case REQ_BUSY:	532	case REQ_BUSY:
423	break;	533	break;
424		534
		535	case REQ_READLINK:
		536	if (req->result > 0)
		537	{
		538	SvCUR_set (req->sv2, req->result);
		539	*SvEND (req->sv2) = 0;
		540	PUSHs (req->sv2);
		541	}
		542	break;
		543
		544	case REQ_STAT:
		545	case REQ_LSTAT:
		546	case REQ_FSTAT:
		547	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
		548	PL_laststatval = req->result;
		549	PL_statcache = *(Stat_t *)(req->ptr2);
		550	PUSHs (sv_2mortal (newSViv (req->result)));
		551	break;
		552
		553	case REQ_READ:
		554	SvCUR_set (req->sv2, req->stroffset + (req->result > 0 ? req->result : 0));
		555	*SvEND (req->sv2) = 0;
		556	PUSHs (sv_2mortal (newSViv (req->result)));
		557	break;
		558
425	default:	559	default:
426	PUSHs (sv_2mortal (newSViv (req->result)));	560	PUSHs (sv_2mortal (newSViv (req->result)));
427	break;	561	break;
428	}	562	}
429		563
		564	errno = req->errorno;
430		565
431	PUTBACK;	566	PUTBACK;
432	call_sv (req->callback, G_VOID | G_EVAL);	567	call_sv (req->callback, G_VOID | G_EVAL);
433	SPAGAIN;	568	SPAGAIN;
434		569
…		…
448	grp->grp_first = req->grp_next;	583	grp->grp_first = req->grp_next;
449		584
450	aio_grp_dec (grp);	585	aio_grp_dec (grp);
451	}	586	}
452		587
453	if (SvTRUE (ERRSV))	588	return !SvTRUE (ERRSV);
454	{
455	req_free (req);
456	croak (0);
457	}
458	}	589	}
459		590
460	static void req_free (aio_req req)	591	static void req_destroy (aio_req req)
461	{	592	{
462	if (req->self)	593	if (req->self)
463	{	594	{
464	sv_unmagic (req->self, PERL_MAGIC_ext);	595	sv_unmagic (req->self, PERL_MAGIC_ext);
465	SvREFCNT_dec (req->self);	596	SvREFCNT_dec (req->self);
466	}	597	}
467		598
468	SvREFCNT_dec (req->data);
469	SvREFCNT_dec (req->fh);	599	SvREFCNT_dec (req->sv1);
470	SvREFCNT_dec (req->fh2);	600	SvREFCNT_dec (req->sv2);
471	SvREFCNT_dec (req->callback);	601	SvREFCNT_dec (req->callback);
472	Safefree (req->statdata);
473		602
474	if (req->type == REQ_READDIR)	603	if (req->flags & FLAG_PTR2_FREE)
475	free (req->data2ptr);	604	free (req->ptr2);
476		605
477	Safefree (req);	606	Safefree (req);
478	}	607	}
479		608
480	static void req_cancel_subs (aio_req grp)	609	static void req_cancel_subs (aio_req grp)
…		…
482	aio_req sub;	611	aio_req sub;
483		612
484	if (grp->type != REQ_GROUP)	613	if (grp->type != REQ_GROUP)
485	return;	614	return;
486		615
487	SvREFCNT_dec (grp->fh2);	616	SvREFCNT_dec (grp->sv2);
488	grp->fh2 = 0;	617	grp->sv2 = 0;
489		618
490	for (sub = grp->grp_first; sub; sub = sub->grp_next)	619	for (sub = grp->grp_first; sub; sub = sub->grp_next)
491	req_cancel (sub);	620	req_cancel (sub);
492	}	621	}
493		622
…		…
496	req->flags |= FLAG_CANCELLED;	625	req->flags |= FLAG_CANCELLED;
497		626
498	req_cancel_subs (req);	627	req_cancel_subs (req);
499	}	628	}
500		629
501	static int poll_cb (int max)	630	X_THREAD_PROC (aio_proc);
502	{
503	dSP;
504	int count = 0;
505	int do_croak = 0;
506	aio_req req;
507
508	while (max <= 0 || count < max)
509	{
510	LOCK (reslock);
511	req = reqq_shift (&res_queue);
512
513	if (req)
514	{
515	if (!res_queue.size)
516	{
517	/* read any signals sent by the worker threads */
518	char buf [32];
519	while (read (respipe [0], buf, 32) == 32)
520	;
521	}
522	}
523
524	UNLOCK (reslock);
525
526	if (!req)
527	break;
528
529	--nreqs;
530
531	if (req->type == REQ_QUIT)
532	started--;
533	else if (req->type == REQ_GROUP && req->length)
534	{
535	req->fd = 1; /* mark request as delayed */
536	continue;
537	}
538	else
539	{
540	if (req->type == REQ_READ)
541	SvCUR_set (req->data, req->dataoffset + (req->result > 0 ? req->result : 0));
542
543	if (req->data2ptr && (req->type == REQ_READ || req->type == REQ_WRITE))
544	SvREADONLY_off (req->data);
545
546	if (req->statdata)
547	{
548	PL_laststype = req->type == REQ_LSTAT ? OP_LSTAT : OP_STAT;
549	PL_laststatval = req->result;
550	PL_statcache = *(req->statdata);
551	}
552
553	req_invoke (req);
554
555	count++;
556	}
557
558	req_free (req);
559	}
560
561	return count;
562	}
563
564	static void *aio_proc(void *arg);
565		631
566	static void start_thread (void)	632	static void start_thread (void)
567	{	633	{
568	sigset_t fullsigset, oldsigset;
569	pthread_attr_t attr;
570
571	worker *wrk = calloc (1, sizeof (worker));	634	worker *wrk = calloc (1, sizeof (worker));
572		635
573	if (!wrk)	636	if (!wrk)
574	croak ("unable to allocate worker thread data");	637	croak ("unable to allocate worker thread data");
575		638
576	pthread_attr_init (&attr);
577	pthread_attr_setstacksize (&attr, STACKSIZE);
578	pthread_attr_setdetachstate (&attr, PTHREAD_CREATE_DETACHED);
579
580	sigfillset (&fullsigset);
581
582	LOCK (wrklock);	639	X_LOCK (wrklock);
583	sigprocmask (SIG_SETMASK, &fullsigset, &oldsigset);
584		640
585	if (pthread_create (&wrk->tid, &attr, aio_proc, (void *)wrk) == 0)	641	if (thread_create (&wrk->tid, aio_proc, (void *)wrk))
586	{	642	{
587	wrk->prev = &wrk_first;	643	wrk->prev = &wrk_first;
588	wrk->next = wrk_first.next;	644	wrk->next = wrk_first.next;
589	wrk_first.next->prev = wrk;	645	wrk_first.next->prev = wrk;
590	wrk_first.next = wrk;	646	wrk_first.next = wrk;
591	started++;	647	++started;
592	}	648	}
593	else	649	else
594	free (wrk);	650	free (wrk);
595		651
596	sigprocmask (SIG_SETMASK, &oldsigset, 0);
597	UNLOCK (wrklock);	652	X_UNLOCK (wrklock);
		653	}
		654
		655	static void maybe_start_thread ()
		656	{
		657	if (get_nthreads () >= wanted)
		658	return;
		659
		660	/* todo: maybe use idle here, but might be less exact */
		661	if (0 <= (int)get_nthreads () + (int)get_npending () - (int)nreqs)
		662	return;
		663
		664	start_thread ();
598	}	665	}
599		666
600	static void req_send (aio_req req)	667	static void req_send (aio_req req)
601	{	668	{
602	while (started < wanted && nreqs >= started)	669	block_sig ();
603	start_thread ();
604		670
605	++nreqs;	671	++nreqs;
606		672
607	LOCK (reqlock);	673	X_LOCK (reqlock);
		674	++nready;
608	reqq_push (&req_queue, req);	675	reqq_push (&req_queue, req);
609	pthread_cond_signal (&reqwait);	676	X_COND_SIGNAL (reqwait);
610	UNLOCK (reqlock);	677	X_UNLOCK (reqlock);
		678
		679	unblock_sig ();
		680
		681	maybe_start_thread ();
611	}	682	}
612		683
613	static void end_thread (void)	684	static void end_thread (void)
614	{	685	{
615	aio_req req;	686	aio_req req;
…		…
617	Newz (0, req, 1, aio_cb);	688	Newz (0, req, 1, aio_cb);
618		689
619	req->type = REQ_QUIT;	690	req->type = REQ_QUIT;
620	req->pri = PRI_MAX + PRI_BIAS;	691	req->pri = PRI_MAX + PRI_BIAS;
621		692
622	req_send (req);	693	X_LOCK (reqlock);
		694	reqq_push (&req_queue, req);
		695	X_COND_SIGNAL (reqwait);
		696	X_UNLOCK (reqlock);
		697
		698	X_LOCK (wrklock);
		699	--started;
		700	X_UNLOCK (wrklock);
		701	}
		702
		703	static void set_max_idle (int nthreads)
		704	{
		705	if (WORDACCESS_UNSAFE) X_LOCK (reqlock);
		706	max_idle = nthreads <= 0 ? 1 : nthreads;
		707	if (WORDACCESS_UNSAFE) X_UNLOCK (reqlock);
623	}	708	}
624		709
625	static void min_parallel (int nthreads)	710	static void min_parallel (int nthreads)
626	{	711	{
627	if (wanted < nthreads)	712	if (wanted < nthreads)
628	wanted = nthreads;	713	wanted = nthreads;
629	}	714	}
630		715
631	static void max_parallel (int nthreads)	716	static void max_parallel (int nthreads)
632	{	717	{
633	int cur = started;
634
635	if (wanted > nthreads)	718	if (wanted > nthreads)
636	wanted = nthreads;	719	wanted = nthreads;
637		720
638	while (cur > wanted)	721	while (started > wanted)
		722	end_thread ();
		723	}
		724
		725	static void poll_wait ()
		726	{
		727	fd_set rfd;
		728
		729	while (nreqs)
639	{	730	{
		731	int size;
		732	if (WORDACCESS_UNSAFE) X_LOCK (reslock);
		733	size = res_queue.size;
		734	if (WORDACCESS_UNSAFE) X_UNLOCK (reslock);
		735
		736	if (size)
		737	return;
		738
640	end_thread ();	739	maybe_start_thread ();
641	cur--;	740
		741	FD_ZERO(&rfd);
		742	FD_SET(respipe [0], &rfd);
		743
		744	select (respipe [0] + 1, &rfd, 0, 0, 0);
642	}	745	}
		746	}
643		747
644	while (started > wanted)	748	static int poll_cb ()
		749	{
		750	dSP;
		751	int count = 0;
		752	int maxreqs = max_poll_reqs;
		753	int do_croak = 0;
		754	struct timeval tv_start, tv_now;
		755	aio_req req;
		756
		757	if (max_poll_time)
		758	gettimeofday (&tv_start, 0);
		759
		760	block_sig ();
		761
		762	for (;;)
645	{	763	{
		764	for (;;)
		765	{
		766	maybe_start_thread ();
		767
		768	X_LOCK (reslock);
		769	req = reqq_shift (&res_queue);
		770
		771	if (req)
		772	{
		773	--npending;
		774
		775	if (!res_queue.size)
		776	{
		777	/* read any signals sent by the worker threads */
		778	char buf [4];
		779	while (read (respipe [0], buf, 4) == 4)
		780	;
		781	}
		782	}
		783
		784	X_UNLOCK (reslock);
		785
		786	if (!req)
		787	break;
		788
		789	--nreqs;
		790
		791	if (req->type == REQ_GROUP && req->size)
		792	{
		793	req->int1 = 1; /* mark request as delayed */
		794	continue;
		795	}
		796	else
		797	{
		798	if (!req_invoke (req))
		799	{
		800	req_destroy (req);
		801	unblock_sig ();
		802	croak (0);
		803	}
		804
		805	count++;
		806	}
		807
		808	req_destroy (req);
		809
		810	if (maxreqs && !--maxreqs)
		811	break;
		812
		813	if (max_poll_time)
		814	{
		815	gettimeofday (&tv_now, 0);
		816
		817	if (tvdiff (&tv_start, &tv_now) >= max_poll_time)
		818	break;
		819	}
		820	}
		821
		822	if (nreqs <= max_outstanding)
		823	break;
		824
646	poll_wait ();	825	poll_wait ();
647	poll_cb (0);	826
		827	++maxreqs;
648	}	828	}
649	}
650		829
651	static void create_pipe ()	830	unblock_sig ();
652	{	831	return count;
653	if (pipe (respipe))
654	croak ("unable to initialize result pipe");
655
656	if (fcntl (respipe [0], F_SETFL, O_NONBLOCK))
657	croak ("cannot set result pipe to nonblocking mode");
658
659	if (fcntl (respipe [1], F_SETFL, O_NONBLOCK))
660	croak ("cannot set result pipe to nonblocking mode");
661	}	832	}
662		833
663	/*****************************************************************************/	834	/*****************************************************************************/
664	/* work around various missing functions */	835	/* work around various missing functions */
665		836
…		…
670	/*	841	/*
671	* make our pread/pwrite safe against themselves, but not against	842	* make our pread/pwrite safe against themselves, but not against
672	* normal read/write by using a mutex. slows down execution a lot,	843	* normal read/write by using a mutex. slows down execution a lot,
673	* but that's your problem, not mine.	844	* but that's your problem, not mine.
674	*/	845	*/
675	static pthread_mutex_t preadwritelock = PTHREAD_MUTEX_INITIALIZER;	846	static mutex_t preadwritelock = X_MUTEX_INIT;
676		847
677	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)	848	static ssize_t pread (int fd, void *buf, size_t count, off_t offset)
678	{	849	{
679	ssize_t res;	850	ssize_t res;
680	off_t ooffset;	851	off_t ooffset;
681		852
682	LOCK (preadwritelock);	853	X_LOCK (preadwritelock);
683	ooffset = lseek (fd, 0, SEEK_CUR);	854	ooffset = lseek (fd, 0, SEEK_CUR);
684	lseek (fd, offset, SEEK_SET);	855	lseek (fd, offset, SEEK_SET);
685	res = read (fd, buf, count);	856	res = read (fd, buf, count);
686	lseek (fd, ooffset, SEEK_SET);	857	lseek (fd, ooffset, SEEK_SET);
687	UNLOCK (preadwritelock);	858	X_UNLOCK (preadwritelock);
688		859
689	return res;	860	return res;
690	}	861	}
691		862
692	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)	863	static ssize_t pwrite (int fd, void *buf, size_t count, off_t offset)
693	{	864	{
694	ssize_t res;	865	ssize_t res;
695	off_t ooffset;	866	off_t ooffset;
696		867
697	LOCK (preadwritelock);	868	X_LOCK (preadwritelock);
698	ooffset = lseek (fd, 0, SEEK_CUR);	869	ooffset = lseek (fd, 0, SEEK_CUR);
699	lseek (fd, offset, SEEK_SET);	870	lseek (fd, offset, SEEK_SET);
700	res = write (fd, buf, count);	871	res = write (fd, buf, count);
701	lseek (fd, offset, SEEK_SET);	872	lseek (fd, offset, SEEK_SET);
702	UNLOCK (preadwritelock);	873	X_UNLOCK (preadwritelock);
703		874
704	return res;	875	return res;
705	}	876	}
		877	#endif
		878
		879	#ifndef HAVE_FUTIMES
		880
		881	# define utimes(path,times) aio_utimes (path, times)
		882	# define futimes(fd,times) aio_futimes (fd, times)
		883
		884	int aio_utimes (const char *filename, const struct timeval times[2])
		885	{
		886	if (times)
		887	{
		888	struct utimbuf buf;
		889
		890	buf.actime = times[0].tv_sec;
		891	buf.modtime = times[1].tv_sec;
		892
		893	return utime (filename, &buf);
		894	}
		895	else
		896	return utime (filename, 0);
		897	}
		898
		899	int aio_futimes (int fd, const struct timeval tv[2])
		900	{
		901	errno = ENOSYS;
		902	return -1;
		903	}
		904
706	#endif	905	#endif
707		906
708	#if !HAVE_FDATASYNC	907	#if !HAVE_FDATASYNC
709	# define fdatasync fsync	908	# define fdatasync fsync
710	#endif	909	#endif
…		…
712	#if !HAVE_READAHEAD	911	#if !HAVE_READAHEAD
713	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)	912	# define readahead(fd,offset,count) aio_readahead (fd, offset, count, self)
714		913
715	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)	914	static ssize_t aio_readahead (int fd, off_t offset, size_t count, worker *self)
716	{	915	{
		916	size_t todo = count;
717	dBUF;	917	dBUF;
718		918
719	while (count > 0)	919	while (todo > 0)
720	{	920	{
721	size_t len = count < AIO_BUFSIZE ? count : AIO_BUFSIZE;	921	size_t len = todo < AIO_BUFSIZE ? todo : AIO_BUFSIZE;
722		922
723	pread (fd, aio_buf, len, offset);	923	pread (fd, aio_buf, len, offset);
724	offset += len;	924	offset += len;
725	count -= len;	925	todo -= len;
726	}	926	}
727		927
728	errno = 0;	928	errno = 0;
		929	return count;
729	}	930	}
730		931
731	#endif	932	#endif
732		933
733	#if !HAVE_READDIR_R	934	#if !HAVE_READDIR_R
734	# define readdir_r aio_readdir_r	935	# define readdir_r aio_readdir_r
735		936
736	static pthread_mutex_t readdirlock = PTHREAD_MUTEX_INITIALIZER;	937	static mutex_t readdirlock = X_MUTEX_INIT;
737		938
738	static int readdir_r (DIR *dirp, struct dirent *ent, struct dirent **res)	939	static int readdir_r (DIR *dirp, X_DIRENT *ent, X_DIRENT **res)
739	{	940	{
740	struct dirent *e;	941	X_DIRENT *e;
741	int errorno;	942	int errorno;
742		943
743	LOCK (readdirlock);	944	X_LOCK (readdirlock);
744		945
745	e = readdir (dirp);	946	e = readdir (dirp);
746	errorno = errno;	947	errorno = errno;
747		948
748	if (e)	949	if (e)
…		…
751	strcpy (ent->d_name, e->d_name);	952	strcpy (ent->d_name, e->d_name);
752	}	953	}
753	else	954	else
754	*res = 0;	955	*res = 0;
755		956
756	UNLOCK (readdirlock);	957	X_UNLOCK (readdirlock);
757		958
758	errno = errorno;	959	errno = errorno;
759	return e ? 0 : -1;	960	return e ? 0 : -1;
760	}	961	}
761	#endif	962	#endif
…		…
857	static void scandir_ (aio_req req, worker *self)	1058	static void scandir_ (aio_req req, worker *self)
858	{	1059	{
859	DIR *dirp;	1060	DIR *dirp;
860	union	1061	union
861	{	1062	{
862	struct dirent d;	1063	X_DIRENT d;
863	char b [offsetof (struct dirent, d_name) + NAME_MAX + 1];	1064	char b [offsetof (X_DIRENT, d_name) + NAME_MAX + 1];
864	} *u;	1065	} *u;
865	struct dirent *entp;	1066	X_DIRENT *entp;
866	char *name, *names;	1067	char *name, *names;
867	int memlen = 4096;	1068	int memlen = 4096;
868	int memofs = 0;	1069	int memofs = 0;
869	int res = 0;	1070	int res = 0;
870	int errorno;
871		1071
872	LOCK (wrklock);	1072	X_LOCK (wrklock);
873	self->dirp = dirp = opendir (req->dataptr);	1073	self->dirp = dirp = opendir (req->ptr1);
874	self->dbuf = u = malloc (sizeof (*u));	1074	self->dbuf = u = malloc (sizeof (*u));
		1075	req->flags |= FLAG_PTR2_FREE;
875	req->data2ptr = names = malloc (memlen);	1076	req->ptr2 = names = malloc (memlen);
876	UNLOCK (wrklock);	1077	X_UNLOCK (wrklock);
877		1078
878	if (dirp && u && names)	1079	if (dirp && u && names)
879	for (;;)	1080	for (;;)
880	{	1081	{
881	errno = 0;	1082	errno = 0;
…		…
893	res++;	1094	res++;
894		1095
895	while (memofs + len > memlen)	1096	while (memofs + len > memlen)
896	{	1097	{
897	memlen *= 2;	1098	memlen *= 2;
898	LOCK (wrklock);	1099	X_LOCK (wrklock);
899	req->data2ptr = names = realloc (names, memlen);	1100	req->ptr2 = names = realloc (names, memlen);
900	UNLOCK (wrklock);	1101	X_UNLOCK (wrklock);
901		1102
902	if (!names)	1103	if (!names)
903	break;	1104	break;
904	}	1105	}
905		1106
…		…
914	req->result = res;	1115	req->result = res;
915	}	1116	}
916		1117
917	/*****************************************************************************/	1118	/*****************************************************************************/
918		1119
919	static void *aio_proc (void *thr_arg)	1120	X_THREAD_PROC (aio_proc)
920	{	1121	{
		1122	{//D
921	aio_req req;	1123	aio_req req;
922	int type;	1124	struct timespec ts;
923	worker *self = (worker *)thr_arg;	1125	worker *self = (worker *)thr_arg;
924		1126
925	do	1127	/* try to distribute timeouts somewhat randomly */
		1128	ts.tv_nsec = ((unsigned long)self & 1023UL) * (1000000000UL / 1024UL);
		1129
		1130	for (;;)
926	{	1131	{
		1132	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1133
927	LOCK (reqlock);	1134	X_LOCK (reqlock);
928		1135
929	for (;;)	1136	for (;;)
930	{	1137	{
931	self->req = req = reqq_shift (&req_queue);	1138	self->req = req = reqq_shift (&req_queue);
932		1139
933	if (req)	1140	if (req)
934	break;	1141	break;
935		1142
936	pthread_cond_wait (&reqwait, &reqlock);	1143	++idle;
		1144
		1145	if (X_COND_TIMEDWAIT (reqwait, reqlock, ts)
		1146	== ETIMEDOUT)
		1147	{
		1148	if (idle > max_idle)
		1149	{
		1150	--idle;
		1151	X_UNLOCK (reqlock);
		1152	X_LOCK (wrklock);
		1153	--started;
		1154	X_UNLOCK (wrklock);
		1155	goto quit;
		1156	}
		1157
		1158	/* we are allowed to idle, so do so without any timeout */
		1159	X_COND_WAIT (reqwait, reqlock);
		1160	ts.tv_sec = time (0) + IDLE_TIMEOUT;
		1161	}
		1162
		1163	--idle;
937	}	1164	}
938		1165
		1166	--nready;
		1167
939	UNLOCK (reqlock);	1168	X_UNLOCK (reqlock);
940		1169
941	errno = 0; /* strictly unnecessary */	1170	errno = 0; /* strictly unnecessary */
942	type = req->type; /* remember type for QUIT check */
943		1171
944	if (!(req->flags & FLAG_CANCELLED))	1172	if (!(req->flags & FLAG_CANCELLED))
945	switch (type)	1173	switch (req->type)
946	{	1174	{
947	case REQ_READ: req->result = pread (req->fd, req->dataptr, req->length, req->offset); break;	1175	case REQ_READ: req->result = req->offs >= 0
948	case REQ_WRITE: req->result = pwrite (req->fd, req->dataptr, req->length, req->offset); break;	1176	? pread (req->int1, req->ptr1, req->size, req->offs)
		1177	: read (req->int1, req->ptr1, req->size); break;
		1178	case REQ_WRITE: req->result = req->offs >= 0
		1179	? pwrite (req->int1, req->ptr1, req->size, req->offs)
		1180	: write (req->int1, req->ptr1, req->size); break;
949		1181
950	case REQ_READAHEAD: req->result = readahead (req->fd, req->offset, req->length); break;	1182	case REQ_READAHEAD: req->result = readahead (req->int1, req->offs, req->size); break;
951	case REQ_SENDFILE: req->result = sendfile_ (req->fd, req->fd2, req->offset, req->length, self); break;	1183	case REQ_SENDFILE: req->result = sendfile_ (req->int1, req->int2, req->offs, req->size, self); break;
952		1184
953	case REQ_STAT: req->result = stat (req->dataptr, req->statdata); break;	1185	case REQ_STAT: req->result = stat (req->ptr1, (Stat_t *)req->ptr2); break;
954	case REQ_LSTAT: req->result = lstat (req->dataptr, req->statdata); break;	1186	case REQ_LSTAT: req->result = lstat (req->ptr1, (Stat_t *)req->ptr2); break;
955	case REQ_FSTAT: req->result = fstat (req->fd , req->statdata); break;	1187	case REQ_FSTAT: req->result = fstat (req->int1, (Stat_t *)req->ptr2); break;
956		1188
		1189	case REQ_CHOWN: req->result = chown (req->ptr1, req->int2, req->int3); break;
		1190	case REQ_FCHOWN: req->result = fchown (req->int1, req->int2, req->int3); break;
		1191	case REQ_CHMOD: req->result = chmod (req->ptr1, req->mode); break;
		1192	case REQ_FCHMOD: req->result = fchmod (req->int1, req->mode); break;
		1193	case REQ_TRUNCATE: req->result = truncate (req->ptr1, req->offs); break;
		1194	case REQ_FTRUNCATE: req->result = ftruncate (req->int1, req->offs); break;
		1195
957	case REQ_OPEN: req->result = open (req->dataptr, req->fd, req->mode); break;	1196	case REQ_OPEN: req->result = open (req->ptr1, req->int1, req->mode); break;
958	case REQ_CLOSE: req->result = close (req->fd); break;	1197	case REQ_CLOSE: req->result = close (req->int1); break;
959	case REQ_UNLINK: req->result = unlink (req->dataptr); break;	1198	case REQ_UNLINK: req->result = unlink (req->ptr1); break;
960	case REQ_RMDIR: req->result = rmdir (req->dataptr); break;	1199	case REQ_RMDIR: req->result = rmdir (req->ptr1); break;
		1200	case REQ_MKDIR: req->result = mkdir (req->ptr1, req->mode); break;
961	case REQ_RENAME: req->result = rename (req->data2ptr, req->dataptr); break;	1201	case REQ_RENAME: req->result = rename (req->ptr2, req->ptr1); break;
962	case REQ_LINK: req->result = link (req->data2ptr, req->dataptr); break;	1202	case REQ_LINK: req->result = link (req->ptr2, req->ptr1); break;
963	case REQ_SYMLINK: req->result = symlink (req->data2ptr, req->dataptr); break;	1203	case REQ_SYMLINK: req->result = symlink (req->ptr2, req->ptr1); break;
		1204	case REQ_MKNOD: req->result = mknod (req->ptr2, req->mode, (dev_t)req->offs); break;
		1205	case REQ_READLINK: req->result = readlink (req->ptr2, req->ptr1, NAME_MAX); break;
964		1206
965	case REQ_FDATASYNC: req->result = fdatasync (req->fd); break;	1207	case REQ_FDATASYNC: req->result = fdatasync (req->int1); break;
966	case REQ_FSYNC: req->result = fsync (req->fd); break;	1208	case REQ_FSYNC: req->result = fsync (req->int1); break;
967	case REQ_READDIR: scandir_ (req, self); break;	1209	case REQ_READDIR: scandir_ (req, self); break;
968		1210
969	case REQ_BUSY:	1211	case REQ_BUSY:
		1212	#ifdef _WIN32
		1213	Sleep (req->nv1 * 1000.);
		1214	#else
970	{	1215	{
971	struct timeval tv;	1216	struct timeval tv;
972		1217
973	tv.tv_sec = req->fd;	1218	tv.tv_sec = req->nv1;
974	tv.tv_usec = req->fd2;	1219	tv.tv_usec = (req->nv1 - tv.tv_sec) * 1000000.;
975		1220
976	req->result = select (0, 0, 0, 0, &tv);	1221	req->result = select (0, 0, 0, 0, &tv);
977	}	1222	}
		1223	#endif
		1224	break;
		1225
		1226	case REQ_UTIME:
		1227	case REQ_FUTIME:
		1228	{
		1229	struct timeval tv[2];
		1230	struct timeval *times;
		1231
		1232	if (req->nv1 != -1. || req->nv2 != -1.)
		1233	{
		1234	tv[0].tv_sec = req->nv1;
		1235	tv[0].tv_usec = (req->nv1 - tv[0].tv_sec) * 1000000.;
		1236	tv[1].tv_sec = req->nv2;
		1237	tv[1].tv_usec = (req->nv2 - tv[1].tv_sec) * 1000000.;
		1238
		1239	times = tv;
		1240	}
		1241	else
		1242	times = 0;
		1243
		1244
		1245	req->result = req->type == REQ_FUTIME
		1246	? futimes (req->int1, times)
		1247	: utimes (req->ptr1, times);
		1248	}
978		1249
979	case REQ_GROUP:	1250	case REQ_GROUP:
980	case REQ_NOP:	1251	case REQ_NOP:
		1252	break;
		1253
981	case REQ_QUIT:	1254	case REQ_QUIT:
982	break;	1255	goto quit;
983		1256
984	default:	1257	default:
985	req->result = ENOSYS;	1258	req->result = -1;
986	break;	1259	break;
987	}	1260	}
988		1261
989	req->errorno = errno;	1262	req->errorno = errno;
990		1263
991	LOCK (reslock);	1264	X_LOCK (reslock);
		1265
		1266	++npending;
992		1267
993	if (!reqq_push (&res_queue, req))	1268	if (!reqq_push (&res_queue, req))
		1269	{
994	/* write a dummy byte to the pipe so fh becomes ready */	1270	/* write a dummy byte to the pipe so fh becomes ready */
995	write (respipe [1], &respipe, 1);	1271	write (respipe [1], &respipe, 1);
		1272
		1273	/* optionally signal the main thread asynchronously */
		1274	if (main_sig)
		1275	pthread_kill (main_tid, main_sig);
		1276	}
996		1277
997	self->req = 0;	1278	self->req = 0;
998	worker_clear (self);	1279	worker_clear (self);
999		1280
1000	UNLOCK (reslock);	1281	X_UNLOCK (reslock);
1001	}	1282	}
1002	while (type != REQ_QUIT);
1003		1283
		1284	quit:
1004	LOCK (wrklock);	1285	X_LOCK (wrklock);
1005	worker_free (self);	1286	worker_free (self);
1006	UNLOCK (wrklock);	1287	X_UNLOCK (wrklock);
1007		1288
1008	return 0;	1289	return 0;
		1290	}//D
1009	}	1291	}
1010		1292
1011	/*****************************************************************************/	1293	/*****************************************************************************/
1012		1294
1013	static void atfork_prepare (void)	1295	static void atfork_prepare (void)
1014	{	1296	{
1015	LOCK (wrklock);	1297	X_LOCK (wrklock);
1016	LOCK (reqlock);	1298	X_LOCK (reqlock);
1017	LOCK (reslock);	1299	X_LOCK (reslock);
1018	#if !HAVE_PREADWRITE	1300	#if !HAVE_PREADWRITE
1019	LOCK (preadwritelock);	1301	X_LOCK (preadwritelock);
1020	#endif	1302	#endif
1021	#if !HAVE_READDIR_R	1303	#if !HAVE_READDIR_R
1022	LOCK (readdirlock);	1304	X_LOCK (readdirlock);
1023	#endif	1305	#endif
1024	}	1306	}
1025		1307
1026	static void atfork_parent (void)	1308	static void atfork_parent (void)
1027	{	1309	{
1028	#if !HAVE_READDIR_R	1310	#if !HAVE_READDIR_R
1029	UNLOCK (readdirlock);	1311	X_UNLOCK (readdirlock);
1030	#endif	1312	#endif
1031	#if !HAVE_PREADWRITE	1313	#if !HAVE_PREADWRITE
1032	UNLOCK (preadwritelock);	1314	X_UNLOCK (preadwritelock);
1033	#endif	1315	#endif
1034	UNLOCK (reslock);	1316	X_UNLOCK (reslock);
1035	UNLOCK (reqlock);	1317	X_UNLOCK (reqlock);
1036	UNLOCK (wrklock);	1318	X_UNLOCK (wrklock);
1037	}	1319	}
1038		1320
1039	static void atfork_child (void)	1321	static void atfork_child (void)
1040	{	1322	{
1041	aio_req prv;	1323	aio_req prv;
1042		1324
1043	while (prv = reqq_shift (&req_queue))	1325	while (prv = reqq_shift (&req_queue))
1044	req_free (prv);	1326	req_destroy (prv);
1045		1327
1046	while (prv = reqq_shift (&res_queue))	1328	while (prv = reqq_shift (&res_queue))
1047	req_free (prv);	1329	req_destroy (prv);
1048		1330
1049	while (wrk_first.next != &wrk_first)	1331	while (wrk_first.next != &wrk_first)
1050	{	1332	{
1051	worker *wrk = wrk_first.next;	1333	worker *wrk = wrk_first.next;
1052		1334
1053	if (wrk->req)	1335	if (wrk->req)
1054	req_free (wrk->req);	1336	req_destroy (wrk->req);
1055		1337
1056	worker_clear (wrk);	1338	worker_clear (wrk);
1057	worker_free (wrk);	1339	worker_free (wrk);
1058	}	1340	}
1059		1341
1060	started = 0;	1342	started = 0;
		1343	idle = 0;
1061	nreqs = 0;	1344	nreqs = 0;
		1345	nready = 0;
		1346	npending = 0;
1062		1347
1063	close (respipe [0]);	1348	close (respipe [0]);
1064	close (respipe [1]);	1349	close (respipe [1]);
1065	create_pipe ();	1350
		1351	if (!create_pipe (respipe))
		1352	croak ("cannot set result pipe to nonblocking mode");
1066		1353
1067	atfork_parent ();	1354	atfork_parent ();
1068	}	1355	}
1069		1356
1070	#define dREQ \	1357	#define dREQ \
…		…
1093	PROTOTYPES: ENABLE	1380	PROTOTYPES: ENABLE
1094		1381
1095	BOOT:	1382	BOOT:
1096	{	1383	{
1097	HV *stash = gv_stashpv ("IO::AIO", 1);	1384	HV *stash = gv_stashpv ("IO::AIO", 1);
		1385
1098	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));	1386	newCONSTSUB (stash, "EXDEV", newSViv (EXDEV));
1099	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));	1387	newCONSTSUB (stash, "O_RDONLY", newSViv (O_RDONLY));
1100	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));	1388	newCONSTSUB (stash, "O_WRONLY", newSViv (O_WRONLY));
		1389	newCONSTSUB (stash, "O_CREAT", newSViv (O_CREAT));
		1390	newCONSTSUB (stash, "O_TRUNC", newSViv (O_TRUNC));
		1391	#ifdef _WIN32
		1392	X_MUTEX_CHECK (wrklock);
		1393	X_MUTEX_CHECK (reslock);
		1394	X_MUTEX_CHECK (reqlock);
		1395	X_MUTEX_CHECK (reqwait);
		1396	X_MUTEX_CHECK (preadwritelock);
		1397	X_MUTEX_CHECK (readdirlock);
		1398	#else
		1399	newCONSTSUB (stash, "S_IFIFO", newSViv (S_IFIFO));
		1400	newCONSTSUB (stash, "SIGIO", newSViv (SIGIO));
		1401	#endif
1101		1402
1102	create_pipe ();	1403	if (!create_pipe (respipe))
		1404	croak ("cannot set result pipe to nonblocking mode");
		1405
1103	pthread_atfork (atfork_prepare, atfork_parent, atfork_child);	1406	X_THREAD_ATFORK (atfork_prepare, atfork_parent, atfork_child);
1104	}	1407	}
1105		1408
1106	void	1409	void
1107	min_parallel (nthreads)	1410	max_poll_reqs (int nreqs)
1108	int nthreads
1109	PROTOTYPE: $	1411	PROTOTYPE: $
		1412	CODE:
		1413	max_poll_reqs = nreqs;
1110		1414
1111	void	1415	void
1112	max_parallel (nthreads)	1416	max_poll_time (double nseconds)
1113	int nthreads
1114	PROTOTYPE: $	1417	PROTOTYPE: $
		1418	CODE:
		1419	max_poll_time = nseconds * AIO_TICKS;
1115		1420
1116	void	1421	void
		1422	min_parallel (int nthreads)
		1423	PROTOTYPE: $
		1424
		1425	void
		1426	max_parallel (int nthreads)
		1427	PROTOTYPE: $
		1428
		1429	void
		1430	max_idle (int nthreads)
		1431	PROTOTYPE: $
		1432	CODE:
		1433	set_max_idle (nthreads);
		1434
		1435	int
		1436	max_outstanding (int maxreqs)
		1437	PROTOTYPE: $
		1438	CODE:
		1439	RETVAL = max_outstanding;
		1440	max_outstanding = maxreqs;
		1441	OUTPUT:
		1442	RETVAL
		1443
		1444	void
1117	aio_open (pathname,flags,mode,callback=&PL_sv_undef)	1445	aio_open (SV8 *pathname, int flags, int mode, SV *callback=&PL_sv_undef)
1118	SV * pathname
1119	int flags
1120	int mode
1121	SV * callback
1122	PROTOTYPE: $$$;$	1446	PROTOTYPE: $$$;$
1123	PPCODE:	1447	PPCODE:
1124	{	1448	{
1125	dREQ;	1449	dREQ;
1126		1450
1127	req->type = REQ_OPEN;	1451	req->type = REQ_OPEN;
1128	req->data = newSVsv (pathname);	1452	req->sv1 = newSVsv (pathname);
1129	req->dataptr = SvPVbyte_nolen (req->data);	1453	req->ptr1 = SvPVbyte_nolen (req->sv1);
1130	req->fd = flags;	1454	req->int1 = flags;
1131	req->mode = mode;	1455	req->mode = mode;
1132		1456
1133	REQ_SEND;	1457	REQ_SEND;
1134	}	1458	}
1135		1459
1136	void	1460	void
1137	aio_close (fh,callback=&PL_sv_undef)	1461	aio_close (SV *fh, SV *callback=&PL_sv_undef)
1138	SV * fh
1139	SV * callback
1140	PROTOTYPE: $;$	1462	PROTOTYPE: $;$
1141	ALIAS:	1463	ALIAS:
1142	aio_close = REQ_CLOSE	1464	aio_close = REQ_CLOSE
1143	aio_fsync = REQ_FSYNC	1465	aio_fsync = REQ_FSYNC
1144	aio_fdatasync = REQ_FDATASYNC	1466	aio_fdatasync = REQ_FDATASYNC
1145	PPCODE:	1467	PPCODE:
1146	{	1468	{
1147	dREQ;	1469	dREQ;
1148		1470
1149	req->type = ix;	1471	req->type = ix;
1150	req->fh = newSVsv (fh);	1472	req->sv1 = newSVsv (fh);
1151	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1473	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1152		1474
1153	REQ_SEND (req);	1475	REQ_SEND (req);
1154	}	1476	}
1155		1477
1156	void	1478	void
1157	aio_read (fh,offset,length,data,dataoffset,callback=&PL_sv_undef)	1479	aio_read (SV *fh, SV *offset, SV *length, SV8 *data, IV dataoffset, SV *callback=&PL_sv_undef)
1158	SV * fh
1159	UV offset
1160	UV length
1161	SV * data
1162	UV dataoffset
1163	SV * callback
1164	ALIAS:	1480	ALIAS:
1165	aio_read = REQ_READ	1481	aio_read = REQ_READ
1166	aio_write = REQ_WRITE	1482	aio_write = REQ_WRITE
1167	PROTOTYPE: $$$$$;$	1483	PROTOTYPE: $$$$$;$
1168	PPCODE:	1484	PPCODE:
1169	{	1485	{
1170	aio_req req;
1171	STRLEN svlen;	1486	STRLEN svlen;
1172	char *svptr = SvPVbyte (data, svlen);	1487	char *svptr = SvPVbyte (data, svlen);
		1488	UV len = SvUV (length);
1173		1489
1174	SvUPGRADE (data, SVt_PV);	1490	SvUPGRADE (data, SVt_PV);
1175	SvPOK_on (data);	1491	SvPOK_on (data);
1176		1492
1177	if (dataoffset < 0)	1493	if (dataoffset < 0)
1178	dataoffset += svlen;	1494	dataoffset += svlen;
1179		1495
1180	if (dataoffset < 0 || dataoffset > svlen)	1496	if (dataoffset < 0 || dataoffset > svlen)
1181	croak ("data offset outside of string");	1497	croak ("dataoffset outside of data scalar");
1182		1498
1183	if (ix == REQ_WRITE)	1499	if (ix == REQ_WRITE)
1184	{	1500	{
1185	/* write: check length and adjust. */	1501	/* write: check length and adjust. */
1186	if (length < 0 || length + dataoffset > svlen)	1502	if (!SvOK (length) || len + dataoffset > svlen)
1187	length = svlen - dataoffset;	1503	len = svlen - dataoffset;
1188	}	1504	}
1189	else	1505	else
1190	{	1506	{
1191	/* read: grow scalar as necessary */	1507	/* read: grow scalar as necessary */
1192	svptr = SvGROW (data, length + dataoffset);	1508	svptr = SvGROW (data, len + dataoffset + 1);
1193	}	1509	}
1194		1510
1195	if (length < 0)	1511	if (len < 0)
1196	croak ("length must not be negative");	1512	croak ("length must not be negative");
1197		1513
1198	{	1514	{
1199	dREQ;	1515	dREQ;
1200		1516
1201	req->type = ix;	1517	req->type = ix;
1202	req->fh = newSVsv (fh);	1518	req->sv1 = newSVsv (fh);
1203	req->fd = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))	1519	req->int1 = PerlIO_fileno (ix == REQ_READ ? IoIFP (sv_2io (fh))
1204	: IoOFP (sv_2io (fh)));	1520	: IoOFP (sv_2io (fh)));
		1521	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
1205	req->offset = offset;	1522	req->size = len;
1206	req->length = length;
1207	req->data = SvREFCNT_inc (data);	1523	req->sv2 = SvREFCNT_inc (data);
1208	req->dataptr = (char *)svptr + dataoffset;	1524	req->ptr1 = (char *)svptr + dataoffset;
		1525	req->stroffset = dataoffset;
1209		1526
1210	if (!SvREADONLY (data))	1527	if (!SvREADONLY (data))
1211	{	1528	{
1212	SvREADONLY_on (data);	1529	SvREADONLY_on (data);
1213	req->data2ptr = (void *)data;	1530	req->flags |= FLAG_SV2_RO_OFF;
1214	}	1531	}
1215		1532
1216	REQ_SEND;	1533	REQ_SEND;
1217	}	1534	}
1218	}	1535	}
1219		1536
1220	void	1537	void
		1538	aio_readlink (SV8 *path, SV *callback=&PL_sv_undef)
		1539	PROTOTYPE: $$;$
		1540	PPCODE:
		1541	{
		1542	SV *data;
		1543	dREQ;
		1544
		1545	data = newSV (NAME_MAX);
		1546	SvPOK_on (data);
		1547
		1548	req->type = REQ_READLINK;
		1549	req->sv1 = newSVsv (path);
		1550	req->ptr2 = SvPVbyte_nolen (req->sv1);
		1551	req->sv2 = data;
		1552	req->ptr1 = SvPVbyte_nolen (data);
		1553
		1554	REQ_SEND;
		1555	}
		1556
		1557	void
1221	aio_sendfile (out_fh,in_fh,in_offset,length,callback=&PL_sv_undef)	1558	aio_sendfile (SV *out_fh, SV *in_fh, SV *in_offset, UV length, SV *callback=&PL_sv_undef)
1222	SV * out_fh
1223	SV * in_fh
1224	UV in_offset
1225	UV length
1226	SV * callback
1227	PROTOTYPE: $$$$;$	1559	PROTOTYPE: $$$$;$
1228	PPCODE:	1560	PPCODE:
1229	{	1561	{
1230	dREQ;	1562	dREQ;
1231		1563
1232	req->type = REQ_SENDFILE;	1564	req->type = REQ_SENDFILE;
1233	req->fh = newSVsv (out_fh);	1565	req->sv1 = newSVsv (out_fh);
1234	req->fd = PerlIO_fileno (IoIFP (sv_2io (out_fh)));	1566	req->int1 = PerlIO_fileno (IoIFP (sv_2io (out_fh)));
1235	req->fh2 = newSVsv (in_fh);	1567	req->sv2 = newSVsv (in_fh);
1236	req->fd2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));	1568	req->int2 = PerlIO_fileno (IoIFP (sv_2io (in_fh)));
1237	req->offset = in_offset;	1569	req->offs = SvVAL64 (in_offset);
1238	req->length = length;	1570	req->size = length;
1239		1571
1240	REQ_SEND;	1572	REQ_SEND;
1241	}	1573	}
1242		1574
1243	void	1575	void
1244	aio_readahead (fh,offset,length,callback=&PL_sv_undef)	1576	aio_readahead (SV *fh, SV *offset, IV length, SV *callback=&PL_sv_undef)
1245	SV * fh
1246	UV offset
1247	IV length
1248	SV * callback
1249	PROTOTYPE: $$$;$	1577	PROTOTYPE: $$$;$
1250	PPCODE:	1578	PPCODE:
1251	{	1579	{
1252	dREQ;	1580	dREQ;
1253		1581
1254	req->type = REQ_READAHEAD;	1582	req->type = REQ_READAHEAD;
1255	req->fh = newSVsv (fh);	1583	req->sv1 = newSVsv (fh);
1256	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh)));	1584	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh)));
1257	req->offset = offset;	1585	req->offs = SvVAL64 (offset);
1258	req->length = length;	1586	req->size = length;
1259		1587
1260	REQ_SEND;	1588	REQ_SEND;
1261	}	1589	}
1262		1590
1263	void	1591	void
1264	aio_stat (fh_or_path,callback=&PL_sv_undef)	1592	aio_stat (SV8 *fh_or_path, SV *callback=&PL_sv_undef)
1265	SV * fh_or_path
1266	SV * callback
1267	ALIAS:	1593	ALIAS:
1268	aio_stat = REQ_STAT	1594	aio_stat = REQ_STAT
1269	aio_lstat = REQ_LSTAT	1595	aio_lstat = REQ_LSTAT
1270	PPCODE:	1596	PPCODE:
1271	{	1597	{
1272	dREQ;	1598	dREQ;
1273		1599
1274	New (0, req->statdata, 1, Stat_t);	1600	req->ptr2 = malloc (sizeof (Stat_t));
1275	if (!req->statdata)	1601	if (!req->ptr2)
1276	{	1602	{
1277	req_free (req);	1603	req_destroy (req);
1278	croak ("out of memory during aio_req->statdata allocation");	1604	croak ("out of memory during aio_stat statdata allocation");
1279	}	1605	}
		1606
		1607	req->flags |= FLAG_PTR2_FREE;
		1608	req->sv1 = newSVsv (fh_or_path);
1280		1609
1281	if (SvPOK (fh_or_path))	1610	if (SvPOK (fh_or_path))
1282	{	1611	{
1283	req->type = ix;	1612	req->type = ix;
1284	req->data = newSVsv (fh_or_path);
1285	req->dataptr = SvPVbyte_nolen (req->data);	1613	req->ptr1 = SvPVbyte_nolen (req->sv1);
1286	}	1614	}
1287	else	1615	else
1288	{	1616	{
1289	req->type = REQ_FSTAT;	1617	req->type = REQ_FSTAT;
1290	req->fh = newSVsv (fh_or_path);
1291	req->fd = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));	1618	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
1292	}	1619	}
1293		1620
1294	REQ_SEND;	1621	REQ_SEND;
1295	}	1622	}
1296		1623
1297	void	1624	void
		1625	aio_utime (SV8 *fh_or_path, SV *atime, SV *mtime, SV *callback=&PL_sv_undef)
		1626	PPCODE:
		1627	{
		1628	dREQ;
		1629
		1630	req->nv1 = SvOK (atime) ? SvNV (atime) : -1.;
		1631	req->nv2 = SvOK (mtime) ? SvNV (mtime) : -1.;
		1632	req->sv1 = newSVsv (fh_or_path);
		1633
		1634	if (SvPOK (fh_or_path))
		1635	{
		1636	req->type = REQ_UTIME;
		1637	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1638	}
		1639	else
		1640	{
		1641	req->type = REQ_FUTIME;
		1642	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1643	}
		1644
		1645	REQ_SEND;
		1646	}
		1647
		1648	void
		1649	aio_truncate (SV8 *fh_or_path, SV *offset, SV *callback=&PL_sv_undef)
		1650	PPCODE:
		1651	{
		1652	dREQ;
		1653
		1654	req->sv1 = newSVsv (fh_or_path);
		1655	req->offs = SvOK (offset) ? SvVAL64 (offset) : -1;
		1656
		1657	if (SvPOK (fh_or_path))
		1658	{
		1659	req->type = REQ_TRUNCATE;
		1660	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1661	}
		1662	else
		1663	{
		1664	req->type = REQ_FTRUNCATE;
		1665	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1666	}
		1667
		1668	REQ_SEND;
		1669	}
		1670
		1671	void
		1672	aio_chmod (SV8 *fh_or_path, int mode, SV *callback=&PL_sv_undef)
		1673	PPCODE:
		1674	{
		1675	dREQ;
		1676
		1677	req->mode = mode;
		1678	req->sv1 = newSVsv (fh_or_path);
		1679
		1680	if (SvPOK (fh_or_path))
		1681	{
		1682	req->type = REQ_CHMOD;
		1683	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1684	}
		1685	else
		1686	{
		1687	req->type = REQ_FCHMOD;
		1688	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1689	}
		1690
		1691	REQ_SEND;
		1692	}
		1693
		1694	void
		1695	aio_chown (SV8 *fh_or_path, SV *uid, SV *gid, SV *callback=&PL_sv_undef)
		1696	PPCODE:
		1697	{
		1698	dREQ;
		1699
		1700	req->int2 = SvOK (uid) ? SvIV (uid) : -1;
		1701	req->int3 = SvOK (gid) ? SvIV (gid) : -1;
		1702	req->sv1 = newSVsv (fh_or_path);
		1703
		1704	if (SvPOK (fh_or_path))
		1705	{
		1706	req->type = REQ_CHOWN;
		1707	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1708	}
		1709	else
		1710	{
		1711	req->type = REQ_FCHOWN;
		1712	req->int1 = PerlIO_fileno (IoIFP (sv_2io (fh_or_path)));
		1713	}
		1714
		1715	REQ_SEND;
		1716	}
		1717
		1718	void
1298	aio_unlink (pathname,callback=&PL_sv_undef)	1719	aio_unlink (SV8 *pathname, SV *callback=&PL_sv_undef)
1299	SV * pathname
1300	SV * callback
1301	ALIAS:	1720	ALIAS:
1302	aio_unlink = REQ_UNLINK	1721	aio_unlink = REQ_UNLINK
1303	aio_rmdir = REQ_RMDIR	1722	aio_rmdir = REQ_RMDIR
1304	aio_readdir = REQ_READDIR	1723	aio_readdir = REQ_READDIR
1305	PPCODE:	1724	PPCODE:
1306	{	1725	{
1307	dREQ;	1726	dREQ;
1308		1727
1309	req->type = ix;	1728	req->type = ix;
1310	req->data = newSVsv (pathname);	1729	req->sv1 = newSVsv (pathname);
1311	req->dataptr = SvPVbyte_nolen (req->data);	1730	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1731
		1732	REQ_SEND;
		1733	}
		1734
		1735	void
		1736	aio_mkdir (SV8 *pathname, int mode, SV *callback=&PL_sv_undef)
		1737	PPCODE:
		1738	{
		1739	dREQ;
1312		1740
		1741	req->type = REQ_MKDIR;
		1742	req->sv1 = newSVsv (pathname);
		1743	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1744	req->mode = mode;
		1745
1313	REQ_SEND;	1746	REQ_SEND;
1314	}	1747	}
1315		1748
1316	void	1749	void
1317	aio_link (oldpath,newpath,callback=&PL_sv_undef)	1750	aio_link (SV8 *oldpath, SV8 *newpath, SV *callback=&PL_sv_undef)
1318	SV * oldpath
1319	SV * newpath
1320	SV * callback
1321	ALIAS:	1751	ALIAS:
1322	aio_link = REQ_LINK	1752	aio_link = REQ_LINK
1323	aio_symlink = REQ_SYMLINK	1753	aio_symlink = REQ_SYMLINK
1324	aio_rename = REQ_RENAME	1754	aio_rename = REQ_RENAME
1325	PPCODE:	1755	PPCODE:
1326	{	1756	{
1327	dREQ;	1757	dREQ;
1328		1758
1329	req->type = ix;	1759	req->type = ix;
1330	req->fh = newSVsv (oldpath);	1760	req->sv2 = newSVsv (oldpath);
1331	req->data2ptr = SvPVbyte_nolen (req->fh);	1761	req->ptr2 = SvPVbyte_nolen (req->sv2);
1332	req->data = newSVsv (newpath);	1762	req->sv1 = newSVsv (newpath);
1333	req->dataptr = SvPVbyte_nolen (req->data);	1763	req->ptr1 = SvPVbyte_nolen (req->sv1);
1334		1764
1335	REQ_SEND;	1765	REQ_SEND;
1336	}	1766	}
1337		1767
1338	void	1768	void
1339	aio_busy (delay,callback=&PL_sv_undef)	1769	aio_mknod (SV8 *pathname, int mode, UV dev, SV *callback=&PL_sv_undef)
1340	double delay
1341	SV * callback
1342	PPCODE:	1770	PPCODE:
1343	{	1771	{
1344	dREQ;	1772	dREQ;
		1773
		1774	req->type = REQ_MKNOD;
		1775	req->sv1 = newSVsv (pathname);
		1776	req->ptr1 = SvPVbyte_nolen (req->sv1);
		1777	req->mode = (mode_t)mode;
		1778	req->offs = dev;
		1779
		1780	REQ_SEND;
		1781	}
		1782
		1783	void
		1784	aio_busy (double delay, SV *callback=&PL_sv_undef)
		1785	PPCODE:
		1786	{
		1787	dREQ;
1345		1788
1346	req->type = REQ_BUSY;	1789	req->type = REQ_BUSY;
1347	req->fd = delay < 0. ? 0 : delay;	1790	req->nv1 = delay < 0. ? 0. : delay;
1348	req->fd2 = delay < 0. ? 0 : 1000. * (delay - req->fd);
1349		1791
1350	REQ_SEND;	1792	REQ_SEND;
1351	}	1793	}
1352		1794
1353	void	1795	void
1354	aio_group (callback=&PL_sv_undef)	1796	aio_group (SV *callback=&PL_sv_undef)
1355	SV * callback
1356	PROTOTYPE: ;$	1797	PROTOTYPE: ;$
1357	PPCODE:	1798	PPCODE:
1358	{	1799	{
1359	dREQ;	1800	dREQ;
1360		1801
1361	req->type = REQ_GROUP;	1802	req->type = REQ_GROUP;
		1803
1362	req_send (req);	1804	req_send (req);
1363
1364	XPUSHs (req_sv (req, AIO_GRP_KLASS));	1805	XPUSHs (req_sv (req, AIO_GRP_KLASS));
1365	}	1806	}
1366		1807
1367	void	1808	void
1368	aio_nop (callback=&PL_sv_undef)	1809	aio_nop (SV *callback=&PL_sv_undef)
1369	SV * callback
1370	PPCODE:	1810	PPCODE:
1371	{	1811	{
1372	dREQ;	1812	dREQ;
1373		1813
1374	req->type = REQ_NOP;	1814	req->type = REQ_NOP;
1375		1815
1376	REQ_SEND;	1816	REQ_SEND;
1377	}	1817	}
1378		1818
1379	void	1819	int
1380	aioreq_pri (int pri = DEFAULT_PRI)	1820	aioreq_pri (int pri = 0)
1381	CODE:	1821	PROTOTYPE: ;$
		1822	CODE:
		1823	RETVAL = next_pri - PRI_BIAS;
		1824	if (items > 0)
		1825	{
1382	if (pri < PRI_MIN) pri = PRI_MIN;	1826	if (pri < PRI_MIN) pri = PRI_MIN;
1383	if (pri > PRI_MAX) pri = PRI_MAX;	1827	if (pri > PRI_MAX) pri = PRI_MAX;
1384	next_pri = pri + PRI_BIAS;	1828	next_pri = pri + PRI_BIAS;
		1829	}
		1830	OUTPUT:
		1831	RETVAL
1385		1832
1386	void	1833	void
1387	aioreq_nice (int nice = 0)	1834	aioreq_nice (int nice = 0)
1388	CODE:	1835	CODE:
1389	nice = next_pri - nice;	1836	nice = next_pri - nice;
1390	if (nice < PRI_MIN) nice = PRI_MIN;	1837	if (nice < PRI_MIN) nice = PRI_MIN;
1391	if (nice > PRI_MAX) nice = PRI_MAX;	1838	if (nice > PRI_MAX) nice = PRI_MAX;
1392	next_pri = nice + PRI_BIAS;	1839	next_pri = nice + PRI_BIAS;
1393		1840
1394	void	1841	void
1395	flush ()	1842	flush ()
1396	PROTOTYPE:	1843	PROTOTYPE:
1397	CODE:	1844	CODE:
1398	while (nreqs)	1845	while (nreqs)
1399	{	1846	{
1400	poll_wait ();	1847	poll_wait ();
1401	poll_cb (0);	1848	poll_cb ();
1402	}	1849	}
1403		1850
1404	void	1851	int
1405	poll()	1852	poll()
1406	PROTOTYPE:	1853	PROTOTYPE:
1407	CODE:	1854	CODE:
1408	if (nreqs)
1409	{
1410	poll_wait ();	1855	poll_wait ();
1411	poll_cb (0);	1856	RETVAL = poll_cb ();
1412	}	1857	OUTPUT:
		1858	RETVAL
1413		1859
1414	int	1860	int
1415	poll_fileno()	1861	poll_fileno()
1416	PROTOTYPE:	1862	PROTOTYPE:
1417	CODE:	1863	CODE:
…		…
1421		1867
1422	int	1868	int
1423	poll_cb(...)	1869	poll_cb(...)
1424	PROTOTYPE:	1870	PROTOTYPE:
1425	CODE:	1871	CODE:
1426	RETVAL = poll_cb (0);	1872	RETVAL = poll_cb ();
1427	OUTPUT:
1428	RETVAL
1429
1430	int
1431	poll_some(int max = 0)
1432	PROTOTYPE: $
1433	CODE:
1434	RETVAL = poll_cb (max);
1435	OUTPUT:	1873	OUTPUT:
1436	RETVAL	1874	RETVAL
1437		1875
1438	void	1876	void
1439	poll_wait()	1877	poll_wait()
1440	PROTOTYPE:	1878	PROTOTYPE:
1441	CODE:	1879	CODE:
1442	if (nreqs)
1443	poll_wait ();	1880	poll_wait ();
		1881
		1882	void
		1883	setsig (int signum = SIGIO)
		1884	PROTOTYPE: ;$
		1885	CODE:
		1886	{
		1887	if (block_sig_level)
		1888	croak ("cannot call IO::AIO::setsig from within aio_block/callback");
		1889
		1890	X_LOCK (reslock);
		1891	main_tid = pthread_self ();
		1892	main_sig = signum;
		1893	X_UNLOCK (reslock);
		1894
		1895	if (main_sig && npending)
		1896	pthread_kill (main_tid, main_sig);
		1897	}
		1898
		1899	void
		1900	aio_block (SV *cb)
		1901	PROTOTYPE: &
		1902	PPCODE:
		1903	{
		1904	int count;
		1905
		1906	block_sig ();
		1907	PUSHMARK (SP);
		1908	PUTBACK;
		1909	count = call_sv (cb, GIMME_V | G_NOARGS | G_EVAL);
		1910	SPAGAIN;
		1911	unblock_sig ();
		1912
		1913	if (SvTRUE (ERRSV))
		1914	croak (0);
		1915
		1916	XSRETURN (count);
		1917	}
1444		1918
1445	int	1919	int
1446	nreqs()	1920	nreqs()
1447	PROTOTYPE:	1921	PROTOTYPE:
1448	CODE:	1922	CODE:
1449	RETVAL = nreqs;	1923	RETVAL = nreqs;
1450	OUTPUT:	1924	OUTPUT:
1451	RETVAL	1925	RETVAL
1452		1926
		1927	int
		1928	nready()
		1929	PROTOTYPE:
		1930	CODE:
		1931	RETVAL = get_nready ();
		1932	OUTPUT:
		1933	RETVAL
		1934
		1935	int
		1936	npending()
		1937	PROTOTYPE:
		1938	CODE:
		1939	RETVAL = get_npending ();
		1940	OUTPUT:
		1941	RETVAL
		1942
		1943	int
		1944	nthreads()
		1945	PROTOTYPE:
		1946	CODE:
		1947	if (WORDACCESS_UNSAFE) X_LOCK (wrklock);
		1948	RETVAL = started;
		1949	if (WORDACCESS_UNSAFE) X_UNLOCK (wrklock);
		1950	OUTPUT:
		1951	RETVAL
		1952
1453	PROTOTYPES: DISABLE	1953	PROTOTYPES: DISABLE
1454		1954
1455	MODULE = IO::AIO PACKAGE = IO::AIO::REQ	1955	MODULE = IO::AIO PACKAGE = IO::AIO::REQ
1456		1956
1457	void	1957	void
…		…
1472	PPCODE:	1972	PPCODE:
1473	{	1973	{
1474	int i;	1974	int i;
1475	aio_req req;	1975	aio_req req;
1476		1976
		1977	if (main_sig && !block_sig_level)
		1978	croak ("aio_group->add called outside aio_block/callback context while IO::AIO::setsig is in use");
		1979
1477	if (grp->fd == 2)	1980	if (grp->int1 == 2)
1478	croak ("cannot add requests to IO::AIO::GRP after the group finished");	1981	croak ("cannot add requests to IO::AIO::GRP after the group finished");
1479		1982
1480	for (i = 1; i < items; ++i )	1983	for (i = 1; i < items; ++i )
1481	{	1984	{
1482	if (GIMME_V != G_VOID)	1985	if (GIMME_V != G_VOID)
…		…
1484		1987
1485	req = SvAIO_REQ (ST (i));	1988	req = SvAIO_REQ (ST (i));
1486		1989
1487	if (req)	1990	if (req)
1488	{	1991	{
1489	++grp->length;	1992	++grp->size;
1490	req->grp = grp;	1993	req->grp = grp;
1491		1994
1492	req->grp_prev = 0;	1995	req->grp_prev = 0;
1493	req->grp_next = grp->grp_first;	1996	req->grp_next = grp->grp_first;
1494		1997
…		…
1508	void	2011	void
1509	result (aio_req grp, ...)	2012	result (aio_req grp, ...)
1510	CODE:	2013	CODE:
1511	{	2014	{
1512	int i;	2015	int i;
		2016	AV *av;
		2017
		2018	grp->errorno = errno;
		2019
1513	AV *av = newAV ();	2020	av = newAV ();
1514		2021
1515	for (i = 1; i < items; ++i )	2022	for (i = 1; i < items; ++i )
1516	av_push (av, newSVsv (ST (i)));	2023	av_push (av, newSVsv (ST (i)));
1517		2024
1518	SvREFCNT_dec (grp->data);	2025	SvREFCNT_dec (grp->sv1);
1519	grp->data = (SV *)av;	2026	grp->sv1 = (SV *)av;
1520	}	2027	}
		2028
		2029	void
		2030	errno (aio_req grp, int errorno = errno)
		2031	CODE:
		2032	grp->errorno = errorno;
1521		2033
1522	void	2034	void
1523	limit (aio_req grp, int limit)	2035	limit (aio_req grp, int limit)
1524	CODE:	2036	CODE:
1525	grp->fd2 = limit;	2037	grp->int2 = limit;
1526	aio_grp_feed (grp);	2038	aio_grp_feed (grp);
1527		2039
1528	void	2040	void
1529	feed (aio_req grp, SV *callback=&PL_sv_undef)	2041	feed (aio_req grp, SV *callback=&PL_sv_undef)
1530	CODE:	2042	CODE:
1531	{	2043	{
1532	SvREFCNT_dec (grp->fh2);	2044	SvREFCNT_dec (grp->sv2);
1533	grp->fh2 = newSVsv (callback);	2045	grp->sv2 = newSVsv (callback);
1534		2046
1535	if (grp->fd2 <= 0)	2047	if (grp->int2 <= 0)
1536	grp->fd2 = 2;	2048	grp->int2 = 2;
1537		2049
1538	aio_grp_feed (grp);	2050	aio_grp_feed (grp);
1539	}	2051	}
1540		2052

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